I have slight problem sometimes whereby I insert original/backup and press X, then nothing happens.
What I do (it seems to work for me) is after you select to play game and it tells you to swap discs, once the original/backup is in wait for it to make the first read noise (listen closely you will hear it) then press X straight away. Also make sure that the (M) code has been selected for the game on the cheat list.
Action replay support link :
http://www.codejunkies.com/support.a...P&cs=£&r=1&l=1
Code list example below:
(M)
0E3C7DF2 1853E59E
EE9545E2 BCA99C80
Just input the codes as they are, each row contains 2 lots of 8 characters, inputting the full line will move down to the following line straight after.
Hope this helps, if not post back